Patent US3249728A successfully refreshed from Google Patents.
US3249728A
Expired / Lapsed
US
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Reed switch having multi-layer diffused contacts
Assignee: NEC Corp
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Filing: 1963-07-29
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Granted: 1966-05-03
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Sasamoto Takeshi
- 👤 Ohki Yoshitami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/018; C; C23; C23C; C23C26/00; H; H01; H01F; H01F1/00; H01H; H01H1/00; H01H1/02; H01H1/0201; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A REED TYPE SWITCH HAVING AT LEAST ONE REED ACTUABLE IN RESPONSE TO A MAGNETIC FIELD, AND HAVING A CONTACT FORMED THEREON, COMPRISING AN ELONGATED MEMBER MADE OF AN IRON-NICKEL ALLOY, AN INTERMEDIATE LAYER OF NICKEL ON ONE END OF SAID MEMBER, AND A LAYER OF GOLD ON SAID INTERMEDIATE LAYER, A PORTION OF METAL FROM SAID INTERMEDIATE LAYER, DIFFUSED INTO SAID GOLD LAYER, AND A PORTION OF METAL
Claim 2
Dependent Claim
69 words
A REED TYPE SWITCH HAVING AT LEAST ONE REED ACTUABLE IN RESPONSE TO A MAGNETIC FIELD, AND HAVING A CONTACT FORMED THEREON, COMPRISING AN ELONGATED MEMBER MADE OF AN IRON-NICKEL ALLOY, AN INTERMEDIATE LAYER OF NICKEL ON ONE END OF SAID MEMBER, AND A LAYER OF GOLD ON SAID INTERMEDIATE LAYER, A PORTION OF METAL FROM SAID INTERMEDIATE LAYER, DIFFUSED INTO SAID GOLD LAYER, AND A PORTION OF METAL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |